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  • 1980-1984  (1)
  • 1965-1969  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical chemistry accounts 14 (1969), S. 48-54 
    ISSN: 1432-2234
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Im Rahmen der Mullikenschen Theorie wird eine Frequenzverschiebung im NQR-Spektrum untersucht. Es wird gezeigt, da\ in der MO-LCAO-NÄherung die Frequenzverschiebung proportional dem Grad des “charge transfer” ist. Für Pikrylchlorid-Komplexe wird die LinearitÄt dieser AbhÄngigkeit bestÄtigt. Experimentell wurde gezeigt, da\ die Verschiebung stark durch sterische Effekte beeinflu\t wird.
    Abstract: Résumé Dans le cadre de la théorie de Mulliken on a étudié le déplacement de. fréquence dans le spectre NQR. Il a été montré que dans l'approximation MO LCAO le déplacement de fréquence est proportionnel à l'importance du transfert de charge. Pour les complexes du chlorure de picryle cette proportionalité a été confirmée par l'expérience. Le déplacement est affecté par ailleurs par les interactions stériques.
    Notes: Abstract In the framework of Mulliken's theory a frequency shift in NQR spectra has been considered. It has been shown that in MO LCAO approximation the frequency shift is proportional to the degree of the charge transfer. For the picrylchloride complexes the linearity of this dependence has been confirmed. It has been shown experimentally that the shift is appreciably affected by steric interactions.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The variances of the fission-fragment mass distributions,σ M 2 , were measured for (α,f) and (3He,f) reactions in the interval between Os and At. The analysis of the experimental data suggests that the properties of symmetric fission aroundx-0.7 are mainly determined by the barrier passing stage. This conclusion is in discrepancy with results of dynamic calculations.
    Type of Medium: Electronic Resource
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